SU1244302A1 - Working member of mining machine - Google Patents

Description

The invention relates to the coal industry, in particular, to mining machines for coal mining on thin seams under the conditions of hydraulic mines.

The aim of the invention is to improve the reliability of the actuator by synchronizing the frequency of rotation of the cutting reels of the wallpaper of the wings at any position in the horizontal plane, and ensuring that the reels of the reels can rotate at any position of the wings in the horizontal plane.

Figure 1 shows the installation, for excavation of coal with the proposed executive body in a position during the expansion of the well, top view; in fig. 2 executive body with a parallel arrangement of its cutting wings; on fig.Z - section aa in figure 2; figure 4 - section bb in figure 2; Fig. 3 shows the shape of a borehole when the executive organ is notched with parallel wings and the well expands with coaxially arranged wings; figure 6 - the same, with a notch spread. volume of the executive body and reversal of the fractures in the reservoir for the return stroke; Fig. 7 - the same, with the turning of the executive body in the reservoir to leave the reference coal face; Fig. 8 shows the order of location of the rims of the executing body to obtain the well shown in Fig. 6.,

Executive body 1 includes a left 2 and right 3 edge with cutting drums 4, which are located with an axial lumen H between them on either side of the feed stavovodovod 5, containing the left 6 and right 7 pipes. Krysh 2 and 3 are connected to each other and with stand 5 by means of left 8 and right 9 water conducting joints with vertical axes

10 revolutions. The actuating member 1 also includes a hydraulic cylinder 11 controlling the position of the wings 2 and 3 in the horizontal plane (in the plane of Figs. 1, 2.5-8), which is communicated hydraulically with 12, 13 and 14 hydraulics 12 and connected kinematically with the wings 2 and 3. .- Hydraulic Cylinder

11 has a rod 15 and the case 16 and is fixed along c 5 on its left 6 and right 7 pipes. Kinematic. hydraulic cylinder 11 with wings

2 and 3 implemented through stock

0

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ka 15, pin 17, levers 18 with slits and clips 19 hinges 8 and 9; levers are welded to the clips.

Wings 2 and 3 are additionally kinematically interconnected by means of a left 20 and a right 21 gear gears, which are located in the space H and each of which contains three gears; . a central parasitic wheel 22, a lateral driving wheel 23 and a lateral synchronizing wheel 24. The central wheels 22 are mounted along axis 10 of hinges 8 and 9 above the joints; the side drive wheels 23 are connected. are rigidly bolted 25 to the drums 4 adjacent to the hinges 8 and 9, and are engaged with the adjacent central wheels 22; lateral synchronizing wheels 24 are fixed on a common horizontal shaft 26 (FIGS. 2 and 3) and are engaged with the respective central wheels 22.

The piston cavity 27 of the hydraulic cylinder 11 coaxially (en with the right pipe 7 of the rod 5, and the rod of its cavity. 28 - with the left pipe of the 6 rod. Hydrolini 12-13, connecting the side pipes 6 and 7 of the rod, is located on the side of the rod 15. Between the point The hydraulic line 12-13 connects with the right pipe 7 and the water pressure extraction point to supply the piston cavity 27 to the hydraulic line 14 on the pipe 7; a check valve 29 is fitted with the possibility of blocking the movement of water from the pipe 6 into the piston cavity 27 of the hydraulic cylinder 11.

 In the drawing, the following are additionally indicated: haul-off drift 30, ventilation drift 31, primary well 32 wide, wider well 33 wide E, height of the river L, radius R of wings 2 and 3, -camera 34 long, tape rear sight 35, support jumper 36, conic cutting head 37, hinges 38 and 5, curvilinear guides 39, launch pad 40, upper feed cylinder 41 with crosshead 42, crosshead 43 of the lower hydraulic cylinder (under the upper one), points K and idle 55 gate the wings 2. and 3, the cutters 44 on the shaft 26, the mounting brackets 45 shaft 26 to stav 5 pipes, pin 46 with spike 47 hinges 9 and 10, elbow0

five

ski 48 pipes stav 5, hydrokinematic transfer 49 (schematically), central pipes 50 of wings 2 and 3, inlet holes 51 in pipes-50, cavity 52 of drum 4, convertible to 53, drain holes 54,

Gears 20 and 21 can be in the form of conventional bevel gears, on wheels 22-24 instead of teeth, a notch can be made to prevent slippage of the corresponding pairs of wheels, wheels can be with pins and grooves. Gears 20 and 21 may be sealed with elastic covers protecting the wheels from direct impact of coal and pulp on them. Hydrokinematic transmission 49 may have a different execution.

The Executive body in the composition of installations for the wells is as follows.

The flow of the executive body 1 when conducting the primary well 32 and its expansion is carried out continuously (figure 5), or with a given discontinuity (figure 6-8) by means of a stavod-conduit 5 and upper 41 and lower hydraulic cylinders on the launch pad 40. Continuity is also provided by the presence of the stav 5 hinges 38 with clamps of the coaxial position of the adjacent links of the stav. Fixation is performed automatically in the straight sections of the stand, namely in the well 32, and the release with the help of the guides 39. Within these directions, the liner-pipe 6 and 7 of the stand 5 acquire the ability to bend. By becoming 5, it is connected to the gesture- KIM conduit on drift 30 via a compensating link (the conduit and compensator are not proven), which also ensures the continuity of movement of the executive body 1. The hydraulic cylinders on the launch pad 40 work in antiphase: when the upper stroke , pushing or pushing its traverse 42 to the next pair of hinges 38, the crosshead 43 of the lower hydraulic cylinder is idled, then the lower hydraulic cylinder operates under load, and the upper one is charged and so on. Water under pressure enters one or two lines of m-pipes of the rod 5 to the executive body 1, where it feeds the hydraulic cylinder 11 reversal

the wings 2 and 3 and enters through the hinges 8 and 9 in the Central pipe 50 (figure 4), which are welded to the holder 19 of these hinges. Through the holes 5 in the pipes 50, water enters the vanes of the hydrokinematic transmission 49, where the conversion of the water flow energy into the mechanical energy of the rotating drums 4 and the conical cutting heads 37; Mechanical energy is realized when the coal is destroyed by the cutters on the drums and heads. At each stage 49, a part of the applied pressure is activated. On leaving the transfer, the watercourse usually has a slight overpressure sufficient to overcome the resistance of the channels 53, the cavity 52 and the openings 54 through which water flows into the atmosphere and is then used for hydrotransport coal, cooling the incisors and dust suppression.

Due to one or another inaccuracy in the manufacture of gears 49 for wings 2 and 3 ,, nonidentity of pressure loss in the power lines of these gears, the speed of rotation of the drums to krx x 2 and 3 may be different. The position is reduced when cutting coal; any increase in load on one drum 4 may lead to a decrease in its rotational speed, while the drums of the other wing operating in the nominal load mode will have a nominal (or increased) rotation frequency. In such a situation, a functional failure in the executive body 1, i.e. stopping the cutting process with one wing. When the primary borehole 32 is conducted, the unequal frequency of rotation of the drums 4 to the peak x 2 and 3 leads to accidental distortion of the axis of the well 32 and to the loss of coal in the belt pillars 35. Stopping one of the drums at any other position of the wings 2 and 3 can cause breakage elements on the lumen H, since the supply of the executive body 1 continues until the protection to shut off the water supply to become 5, i.e. until the wings begin to unfold around points K, -, and KT. to extract the organ of the organ 1 on the drift 30 for the rimon;

that

The presence of gears 20 and 21 makes it possible to avoid differences in the frequencies of rotation of the drums 4, on the wings 2 and 3.

Let the useful load increase on the drums of the left wing 2. The rotational speed of these reels will tend to decrease. Since both wings, through the drive wheels 23, are brought into engagement with the central wheels 22, and these, in turn, are inserted; with the wheels 24 fixed on the shaft 26, the rotational speeds of the drums of both raids are equalized and the increased load on the left wing is overcome by the drums of Rybdih Krypiev ..

The turn of the slopes 2 and 3 in the horizontal plane (or in the plane of the reservoir) from the coaxial position (Fig. O in parallel (Fig. 2) and. The hydraulic cylinder 11 is reversed. In order to install the wing in parallel, and then to drill the well 32, only along the left line - pipe 6, the pressure through the hydroline. 12 from this pipe is transferred to the piston from the rod end 28, and from the piston cavity 27 water is displaced to drain through the right line pipe 7. The rod 15 is pushed into the body 16, through its pivot 17 turns the levers 18, welded to the clips 19 ball 8 and 9. The sleeves, turning with respect to the axes 10, unfold the central pipes 50 with drums 4 and heads 37. Simultaneously with the operation of the hydraulic cylinder 11 to turn the rims 2 and 3, the hydrokinematic transmissions 49 of these wings work because the pressurized water comes from the left pipe 6 through the left hinge 8 into the pipe 50 of the left wing.2 and at the same time through the hydroline 13 from the rod end 28 into the right pipe 7 turning 5, into the right hinge 9 and into the hydrokinematic transfer 49 of the right wrench 3. Water cannot pass to the drain right pipe 7 and go into the piston cavity 27 hydro--., cylinder 11 due to the presence of a check valve 29 on the pipe 7 between hydraulics KEI 13 and 14. As with the considered reversal of the wings their drums function, it is possible to fill the actuator 1 into the reservoir from the drift 30 with a small width of this drift (Fig.6.7 and 8). At times

the drive wheels 23 roll around the hubs around the central wheels 22, always remaining in engagement with the latter, therefore, in this case, synchronization of the frequencies of the increase of the drums 4 on the wings 2 and 3 is ensured.

For reversing the parallels. in the coaxial position and to move the actuator 1 with the axial position of the wings, water should be fed simultaneously through two lines to the pipe of the rod 5. At the same time, the water acts on the piston of the hydraulic cylinder 11 from the rod end 28 and simultaneously on the same piston and from the PARTY piston cavity 27, entering into it through the hydroline 14. Proportionally to the area of the rod 15 in the hydraulic cylinder 11, there is a force pushing this rod out of the housing 16. The rod turns the levers 18 through the pin 17 and lends the tubes 19 with pipes 50, i.e. wings 2 and 3 turn from a parallel position in the coocrioe. During the turn of the wings, their hydrokinematic transfers 49 operate with the same frequency of rotation of all the drums 4 entering the actuator 1. The rotation of the drums can be used to cut coal during the turn, for example, to organize the return stroke of the actuator 1 without exiting it to the valve the current drift 31 (Fig.6.7 and 8).

When conducting a paired well 32 (FIG. 4), the scallops of coal 55 are formed, the presence of which may make it difficult to position the shaft 26 above (or below) the levers 18. To destroy the scallop 55 that interferes with this placement, you can use the cutters 44, set Hbix on the shaft 26 .

If the width of the drift 30 allows, the actuator 1 can be placed with it while the wings 2 and 3 are parallel, then pass the bore 32 to the ventilation drift 31, on which the wing is turned to the coaxial position and back to the width with the return stroke (Fig. five). The exit of the actuator 1 to the drift 31 is accompanied by disassembling the lining on the width t and its subsequent installation.

The number of mounting and dismantling operations on the drift 31 can be significantly reduced if the turning of the wings 2 and 3 is not carried out on the drift 31, but lower (Fig.6.7 and 8). To do this, the well 32 is run up to mating with the drift 31, then the executive body 1 is released and turned from a parallel position of the rims to a coaxial position while cutting the coal. A vault with radius R is formed (Figures 6 and 8). An extended well 33 is then conducted, f. If it is not possible to bring into the well 32 from the drift 31 a cable with a width t of the support, then

44302 8

the wells of FIG. 6 can be recommended for a stable roof. A borehole can also be obtained with support bridges 36 (Fig. 7), if the chambers are 34 long enough to support the roof without being fixed during the drilling of the hole to the full height of the shaft L.

If the drift 30 is narrow, krish executive body 10 can be positioned coaxially, and then turn the flaps into a parallel position with simultaneous cutting of coal (Fig.6, 7 and 8).

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Editor L. Veselovska

Compiled by N. Yastrebinsk

Tehred O. Sopko Proofreader M. Pojo

Order 3791/34

Circulation 470. Subscription

VNRSHPI State Committee of the USSR

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, Projecto st., 4

K NN N N NNNN NN NVN

syrz.8

Claims (2)

1. EXECUTIVE BODY OF THE MINING MACHINE by ed. St. No. 1182162, with the fact that, in order to increase its reliability in work by synchronizing the rotation frequency of the cutting drums of both wings at any position in the horizontal plane, the cutting drums of the wings are kinematically interconnected by two gears located in the lumen between the wings, each of which contains three gears: a central spurious, lateral drive and side synchronizing, and the central wheels are mounted coaxially to the hinges, relative to which are made I turn the wings, each side leading knee is rigidly connected to an adjacent cutting hinge, the drum is aligned with it and engaged with an adjacent central wheel, and the side synchronizing wheels are fixed on a common horizontal shaft and engaged with the corresponding central wheels. 2. The executive body according to claim 1, characterized in that, in order to ensure the possibility of rotation of the cutting drums at any position of the wings in the horizontal plane, the hydraulic connection of the wing turning hydraulic cylinder with the side pipes of the two-line falling stave-water conduit is made by communicating its piston cavity with one the side pipe of the stav, and the rod cavity - on the other, while the hydroline connecting the side pipes of the stav is located on the side of the rod, and between the connection point of this hydraulic line with the side pipe a piston cavity, and a water sampling point for feeding this cavity, a non-return valve is installed on the side pipe with the possibility of locking the movement of fluid from the opposite side pipe into the piston cavity of the hydraulic cylinder. 1244302 A2